By M. Giant
Just what we need: another group of survivors. Tyrese, Sasha, and a family of three fight their way through the woods and blunder into the prison's busted-ass rear entrance, but not without the mother sustaining a bite. Inside, Carl seems to be the temporary leader of what's left of the group. Hearing the screams from the bowels of the prison, he goes down, rescues the new group, and locks them up in the anteroom outside Cell Block C with food and water, and a recently dead comrade for them to take out. So things at the prison seem fairly well under control for now.
The Governor orders the execution of Glenn and Maggie to prevent Andrea from learning of their presence, but they don't go quietly. In fact, Maggie kills one of their captors, which buys them just enough time that Rick and his rescue team are able to save them from immediate death. But getting back out of town soon proves more difficult than getting in; the alarm has been raised and the group is going to have to shoot their way out. Daryl learns that Merle is responsible for Glenn's injuries and wants to see him, but agrees to be there for Rick on the way out.
Michonne has her own agenda, though, and while Rick and his people are working on their escape, she sneaks into the Governor's place and awaits his return. But before he gets home, Michonne discovers his creepy den, with the tanks full of heads and the walker-child locked up behind the grate. She's about to take her out when the Governor stops her. There's a hell of a fight which the Governor loses, along with an eye, but Michonne's delivery of the coup de grace is forestalled by the timely arrival of Andrea, who somehow has remained ignorant of the nature of the intrusion into Woodbury all this time.
Rick and his group fight do fight their way out, but at a cost; Rick suffers a Shane-flashback, Oscar is killed, and Daryl stays behind to provide them with covering fire and is unable to make his escape. Michonne reunites with Rick, Glenn, and Maggie outside the walls and tells Rick he'll need her help, whether he chooses to get the injured Glenn back to the prison or return for Daryl. And the Governor assembles the townspeople and makes a speech all about the terrorists who attacked them, naming Merle as one of them (probably because he now knows Merle lied to him about having killed Michonne) and displaying Daryl as a prisoner in the arena. But whatever he's got planned for them, it's going to have to wait until February.